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Enhancing aromatic yield from catalytic pyrolysis of Ca2+-loaded lignin coupled with metal-modified HZSM-5

Zhang, Huiyan, Luo, Bingbing, Wu, Kai, Wu, Han, Yu, Jiajun, Wang, Siyu·2022·Applications in Energy and Combustion Science
DOI 10.1016/j.jaecs.2021.100049
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Abstract

Catalytic fast pyrolysis of lignin is easy to cause agglomeration and coking, resulting in low-yield aromatic hydrocarbons. Catalytic pyrolysis of modified lignin combined with metal-modified HZSM-5 was proposed to enhance the aromatic yield. The experiment results showed that chemical modification with Ca(OH)2 not only inhibited the agglomeration behavior of lignin but also increased the yield of light phenolic compounds. Moreover, Ca2+-loaded lignin combined with metal-modified HZSM-5 was conducive to the formation of aromatics. The total yield of aromatics from the catalytic fast pyrolysis of Ca2+-loaded lignin over Zn/HZSM-5 was improved from 31.1 to 46.1 mg/g. The mechanism insight showed that Ca2+ modification realized the chemical combination between Ca2+ and the functional groups which are responsible for the agglomeration of lignin, and then the introduction of the Zn species suppressed the hydrogen transfer reaction and enhanced the dehydrogenation pathway, resulting in the increase of aromatic yield.

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Crossref · 10.1016/j.jaecs.2021.100049

Cites

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Figures

Image 1
CC-BY-NC-ND · From the PDF
Image 2
CC-BY-NC-ND · From the PDF
Fig. 2 TG (a) and DTG (b) characterization of Ca(OH)2, UL, CLL, and CML.
Fig. 2 TG (a) and DTG (b) characterization of Ca(OH)2, UL, CLL, and CML.CC-BY-NC-ND · From the PDF
Fig. 3 FTIR spectra of Ca(OH)2, UL, CML, and CLL.
Fig. 3 FTIR spectra of Ca(OH)2, UL, CML, and CLL.CC-BY-NC-ND · From the PDF
Fig. 4 N2 adsorption-desorption isotherms of all catalysts.
Fig. 4 N2 adsorption-desorption isotherms of all catalysts.CC-BY-NC-ND · From the PDF
Fig. 5 XRD patterns of all catalysts.
Fig. 5 XRD patterns of all catalysts.CC-BY-NC-ND · From the PDF
Fig. 6 Products distribution from the pyrolysis of lignin. (a: UL at 550 ◦ C; b: CML at 550 ◦ C; c1-c4: CLL at 450, 500, 550, and 600 ◦ C).
Fig. 6 Products distribution from the pyrolysis of lignin. (a: UL at 550 ◦ C; b: CML at 550 ◦ C; c1-c4: CLL at 450, 500, 550, and 600 ◦ C).CC-BY-NC-ND · From the PDF
Fig. 7 The relative content of bio-oil compositions.
Fig. 7 The relative content of bio-oil compositions.CC-BY-NC-ND · From the PDF
Fig. 8 Comparison of biochar produced from (a) UL, (b) CML, and (c) CLL at 550 ◦ C.
Fig. 8 Comparison of biochar produced from (a) UL, (b) CML, and (c) CLL at 550 ◦ C.CC-BY-NC-ND · From the PDF
Image 10
CC-BY-NC-ND · From the PDF
Fig. 10 Possible reaction pathways in catalytic pyrolysis of CLL over metal-modified HZSM-5.
Fig. 10 Possible reaction pathways in catalytic pyrolysis of CLL over metal-modified HZSM-5.CC-BY-NC-ND · From the PDF

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Metadata

Authors
Zhang, H., Luo, B., Wu, K., Wu, H., Yu, J., & Wang, S.
Venue
Applications in Energy and Combustion Science
Publisher
Elsevier BV
Published
2022-03
Volume
9
Pages
100049
ISSN
2666-352X
DOI
10.1016/j.jaecs.2021.100049
Cited by
3
References
42
Language
en
Licence
Funders
  • National Natural Science Foundation of China
  • National Outstanding Youth Science Fund Project of National Natural Science Foundation of China (51822604)

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CoChat. (2026). Citation check: Enhancing aromatic yield from catalytic pyrolysis of Ca2+-loaded lignin coupled with metal-modified HZSM-5. https://app.cochat.ai/papers/10.1016/j.jaecs.2021.100049
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Zhang, H., Luo, B., Wu, K., Wu, H., Yu, J., & Wang, S. (2022). Enhancing aromatic yield from catalytic pyrolysis of Ca2+-loaded lignin coupled with metal-modified HZSM-5. Applications in Energy and Combustion Science. https://doi.org/10.1016/j.jaecs.2021.100049

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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.